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Example: Trunk Volume

Problem 1b

Make sure you know where your table should start and end. (Hint: Where does your integral start and end?)

 
A
B
C
D
E
 
1
height
diameter
pi*r^2
 
trapezoidal
 
2
(ft)
(in)
(ft^2)
Const
rule
 
3
0
8.3
0.3757367
1
0.3757367
Remember, you're setting up the trapezoidal rule with pi*r^2 in square feet, not the diameter in inches.
4
5
7.9
0.3403937
2
0.6807875
5
10
7.4
0.2986695
2
0.5973389
6
15
7
0.2672535
***
***
7
20
***
***
     
8
***
***
   
 
 
9
***
   
 
 
 
10
           
11
     
SUM:
???
 
  Height and diameter come from your table. (Make sure you know where to start and end!) You will need to convert to radius, and to feet! (Pi is entered as PI() in Excel formulas.)
The rest of this is just the trapezoidal rule.
Remember to multiply the sum by 5/2.

 

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